An extended or more formal adjective form meaning improvisational, extemporaneous, or created spontaneously without prior preparation.
From autoschediastic + -al (pertaining to). Additional adjectival suffix creating a more elaborate scholarly form.
Adding '-al' to autoschediastic makes it sound even more academic—this is the kind of word a professor might use to describe a student's spontaneous brilliant answer!
Complete word intelligence in one call. Free tier — 50 lookups/day.